Update app.py

app.py

@@ -597,7 +597,7 @@ with gr.Blocks(theme='sudeepshouche/minimalist', css=css) as demo:
         chat_history_engine = summarize_assistant_messages(chat_history_engine)
 
         # Engine:
-        retriever_tools = [choice for choice, tool in choices_with_tools if choice in selected_choices]
+        retriever_tools = [tool for choice, tool in choices_with_tools if choice in selected_choices]
         print("Choise: " + str(retriever_tools))
         # Configuración dinámica de RouterRetriever y engine
         retriever = RouterRetriever(